Data sending method, terminal device, and access network device

Patent metadata

Field	Value
Publication number	US-10945257-B2
Application number	US-201916453523-A
Country	US
Kind code	B2
Filing date	Jun 26, 2019
Priority date	Dec 27, 2016
Publication date	Mar 9, 2021
Grant date	Mar 9, 2021

Abstract

A data sending method, a terminal device, an access network device, and a system are provided. The method includes: obtaining, by a terminal device, a sending period of first data; obtaining, by the terminal device, configuration information of a first resource; determining, a second resource based on the configuration information of the first resource and a sending period of the first data; and selecting, by the terminal device, a resource other than the second resource to send the first data. When selecting a resource used for V2X communications data or D2D communications data, the terminal device excludes the second resource that cannot be used for the V2X communications data or the D2D communications data, so as to avoid a conflict between the second resource and the resource selected by the terminal device for sending the first data, and improve reliability and security of D2D communication and V2X communication.

First claim

What is claimed is:

1. A data sending method performed by a terminal device, the method comprising:
obtaining a sending period of a first data;
obtaining a configuration information of a first resource, wherein the first resource is not available for sending the first data;
determining a second resource based on:
the configuration information of the first resource, and
the sending period of the first data; and

selecting a resource other than the second resource to send the first data,
wherein:
the first resource comprises a synchronization subframe,
the configuration information of the first resource comprises a period of the synchronization subframe and an offset,
the determining a second resource based on the configuration information of the first resource and the sending period of the first data comprises determining the second resource based on:
the period of the synchronization subframe,
the offset, and
the sending period of the first data;

the determining the second resource based on the period of the synchronization subframe, the offset, and the sending period of the first data comprises:
determining a greatest common divisor X of the period of the synchronization subframe and the sending period of the first data based on the period of the synchronization subframe and the sending period of the first data; and
determining the second resource based on the offset and the greatest common divisor X,
where a subframe number k of the second resource satisfies a formula:
mod(abs( k −offset), X )=0, and

where:
k is an integer greater than or equal to 0,
the offset is an offset of a first synchronization subframe in a system frame number cycle relative to a first subframe in the system frame number cycle, or the offset is an offset of a first synchronization subframe in a direct frame number cycle relative to a first subframe in the direct frame number cycle,
X is a positive integer,
abs(k−offset) represents an absolute value of k−offset, and
mod(abs(k−offset), X) represents a remainder obtained by dividing abs(k−offset) by X.

2. The method according to claim 1 , wherein
the second resource comprises the first resource and a third resource, and the third resource is separated from the first resource by at least one sending period of the first data.

3. The method according to claim 1 , wherein
the obtaining, by the terminal device, configuration information of a first resource comprises:
receiving, by the terminal device, the configuration information of the first resource from an access network device; or
obtaining, by the terminal device, the configuration information of the first resource based on preconfigured information.

4. A terminal device, comprising:
a processor, configured to obtain a sending period of first data, wherein
the processor, is further configured to obtain configuration information of a first resource, wherein the first resource is not for sending the first data;
the processor, is further configured to determine a second resource based on the configuration information of the first resource and the sending period of the first data; and
the processor, is further configured to select a resource other than the second resource to send the first data,
wherein:
the first resource comprises a synchronization subframe,
the configuration information of the first resource comprises a period of the synchronization subframe and an offset,
the determining a second resource based on the configuration information of the first resource and the sending period of the first data comprises determining the second resource based on:
the period of the synchronization subframe,
the offset, and
the sending period of the first data;

the determining the second resource based on the period of the synchronization subframe, the offset, and the sending period of the first data comprises:
determining a greatest common divisor X of the period of the synchronization subframe and the sending period of the first data based on the period of the synchronization subframe and the sending period of the first data; and
determining the second resource based on the offset and the greatest common divisor X,
where a subframe number k of the second resource satisfies a formula:
mod(abs( k −offset), X )=0, and

where:
k is an integer greater than or equal to 0,
the offset is an offset of a first synchronization subframe in a system frame number cycle relative to a first subframe in the system frame number cycle, or the offset is an offset of a first synchronization subframe in a direct frame number cycle relative to a first subframe in the direct frame number cycle,
X is a positive integer,
abs(k−offset) represents an absolute value of k−offset,
mod(abs(k−offset), X) represents a remainder obtained by dividing abs(k−offset) by X, and
abs is the absolute value function.

5. The terminal device according to claim 4 , wherein
the second resource comprises the first resource and a third resource, and the third resource is separated from the first resource by at least one sending period of the first data.

6. The terminal device according to claim 4 , wherein
that the processor, is further configured to select a resource other than the second resource to send the first data comprises:
the processor, is configured to select, from resources in a data sending resource selection window except the second resource, the resource for sending the first data.

7. The terminal device according to claim 4 , wherein
that the processor, is configured to obtain configuration information of a first resource comprises:
the processor, is configured to obtain the configuration information of the first resource based on preconfigured information; or
the terminal device further comprises a receiving unit, and the receiving unit receives the configuration information of the first resource from an access network device.

8. A data sending method, comprising:
sending, by an access network device, configuration information of a first resource to a terminal device, wherein the first resource is not for sending first data, the configuration information of the first resource is used by the terminal device to determine a second resource based on the configuration information of the first resource and a sending period of the first data, and the second resource is used by the terminal device to select a resource other than the second resource to send the first data,
wherein:
the first resource comprises a synchronization subframe,
the configuration information of the first resource comprises a period of the synchronization subframe and an offset,
the determining a second resource based on the configuration information of the first resource and the sending period of the first data comprises determining the second resource based on:
the period of the synchronization subframe,
the offset, and
the sending period of the first data;

the determining the second resource based on the period of the synchronization subframe, the offset, and the sending period of the first data comprises:
determining a greatest common divisor X of the period of the synchronization subframe and the sending period of the first data based on the period of the synchronization subframe and the sending period of the first data; and
determining the second resource based on the offset and the greatest common divisor X,
where a subframe number k of the second resource satisfies a formula:
mod(abs( k −offset), X )=0, and

where:
k is an integer greater than or equal to 0,
the offset is an offset of a first synchronization subframe in a system frame number cycle relative to a first subframe in the system frame number cycle, or the off

Assignees

• Huawei Tech Co Ltd

Inventors

• Liu Deping
• Zhao Zhenshan
• Li Hong

Classifications

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W92/18

  between terminal devices · CPC title

• H04W4/40

  for vehicles, e.g. vehicle-to-pedestrians [V2P] · CPC title

• H04W72/25

  between terminals via a wireless link, e.g. sidelink · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title